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Case law › Section 143

Section 143

Authorities that bear on section 143 of the Income-tax Act, 1961. Each one tells you what it decided and what to do if it applies to you.

The Income-tax Act, 1961 was repealed on 1 April 2026. It still governs income earned up to 31 March 2026, and every proceeding about those years however late — assessment, reassessment, rectification, penalty, revision and appeal alike. Income earned from 1 April 2026 is governed by the Income-tax Act, 2025. What changed, and which Act governs your year →

Section 143 — the law in short

What the courts have decided on section 143, in one screen. Read this first; open an entry when you need the facts, the reasoning and the source.

Listed strongest first: Supreme Court, then High Court, then Tribunal, then CBDT. Nothing here has yet been read in full by a chartered accountant — open an entry to see where it came from.

Section 143 — 12 entries

Explained in this library

What section 143 does, in plain English, before you read what the courts made of it.

Best judgment assessment (section 144)

The officer estimated my income without any basis — can he just pick a number?

Which orders you can actually appeal to the CIT(A)

Is the order I have received an appealable order under section 246A, and what if I have already accepted it?